Type 2 diabetes in Australia's children and young people: a working paper

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Type 2 diabetes in Australia's children and young people identifies and describes national data sources to monitor incidence and prevalence of type 2 diabetes in children and young people and assesses their suitability for this task. This working paper also presents, for the first time, national incidence and prevalence estimates of type 2 diabetes in Australia's children and young people.

ISSN: 1444-8033

ISBN: 978-1-74249-538-5

Cat. no: CVD 64

Pages: 66

Findings from this report:

Incidence of type 2 diabetes increases with age, 5 times as high among 20-24 than 10-14 year olds

As of June 2012 there were around 2,200 10-24 year olds diagnosed with type 2 diabetes

In the decade to 2011-12 there were around 4,000 new cases of type 2 diabetes among 10-24 year olds

Incidence rates of type 2 diabetes among children and young people have remained fairly stable over the last decade

Summary

Type 2 diabetes has typically been considered a disease of older people but reports show that it is being diagnosed at younger ages than in the past. To date, this has not been explored in Australia at the national level. This paper identifies and describes national data sources for monitoring incidence and prevalence of type 2 diabetes in children and young people and assesses their suitability for this task. This paper also presents the latest available national incidence and prevalence information from data that combined 2 national administrative data sets-the National Diabetes Services Scheme (NDSS) and the Australasian Paediatric Endocrine Group (APEG).

Data sources to monitor type 2 diabetes in children and young people

Data about type 2 diabetes in children and young people are available from a number of data sources in Australia, all of which have strengths and weaknesses. Survey data, such as the biomedical component of the Australian Bureau of Statistics' (ABS') Australian Health Survey (AHS), potentially provide an opportunity to assess the extent of undiagnosed cases of type 2 diabetes. However, the best ongoing data are from administrative databases:

The NDSS database represents a high proportion of people in Australia with diagnosed diabetes.

The APEG databases cover diagnosed diabetes in children and young people though, as these data are from individual state registers, each currently has a slightly different scope.

Number of children and young people with type 2 diabetes

As of June 2012, there were around 31,000 people aged 10-39 diagnosed with type 2 diabetes; this was 0.3% of the population in this age group.

Of these approximately 2,200 were aged 10-24 years.

New cases of type 2 diabetes in children and young people

From 2002-03 to 2011-12, there were nearly 39,000 new cases of type 2 diabetes among those aged 10-39-this represented around 9% of all new cases.

Among young people, the risk of type 2 diabetes rose with increasing age-from an average annual rate of new cases of 3 per 100,000 population in 10-14 year olds, to 8 per 100,000 for those aged 15-19 and 16 per 100,000 for those aged 20-24.

From 2002-03 to 2011-12, there were around 4,000 new cases of type 2 diabetes among those aged 10-24-an average of nearly 400 new cases per year.

In 2006-11, the age-specific rate of type 2 diabetes for Indigenous Australians was higher than for non-Indigenous Australians-8 times as high among 10-14 year olds and around 4 times as high for 15-19 and 20-24 year olds.

Rate of onset of type 2 diabetes in children and young people has not risen in Australia

This study found no evidence of a rise in the rate of new cases of type 2 diabetes in young people over 2002-03 to 2011-12. The rates did not change in those aged 10-19 and 30-39, and they fell in the 20-29 year group.